Dispensing device



March'Z, 1937. w. FRIEDMAN ET AL DISPENSING DEVICE Filed Dec. 27, 1932INVENTOR W1 11 1am fiz'edman ""4 .B jamin Lmdner' BYTHEIR ATTORNEY? II-f'r A 5% 35 the plunger partly advanced as occurs Patented Mar. 2,1937 UNITED STATES 2,072,827 DISPENSING DEVICE New York, and Benjamin r,Larchmont, N. Y.; sai signer to said Lindner Application December 2'1,

William Friedman,

Lindne 11 Claims.

This invention relates to dispensing devices, and more particularly tothat type of dispensing devices wherein the material to be dispensed isextruded as required from the container.

The objects of the invention are to provide an improved dispensingdevice of such inexpensive character that it may be thrown away when thecontents have been once extruded; to provide a dispensing device whereinaplurality of substances 10 may be retained in separated condition butextruded by a single operation by the user; to provide a device whichmay be readily sealed and readily unsealed for use; to provide a compactdevice in sealed condition; to provide a plunger stem which may beretracted to both break the seal and open the extruding passage and toposition the said stem ready to extrude the material;

to secure simplicity of construction and operation; advantages andresults as may be in the following description. 1 Referring to theaccompanying drawing, in which like numerals of reference indicatesimilar parts throughout the several views;

Figure l is an elevation of a dispensing device constructed inaccordance with our invention, shown in sealed condition as received bythe customer.

Figure 2' is a longitudinal sectional view on 30 line 2-2 of Fig. 1,likewise showing the device in sealed condition;

Figure 3 is a similar sectional view, showing the plunger in positionready to extrude the material; Figure 4 is a similar sectional view,showing durin brought out extrusion of the material; Figure 5 is asimilar longitudinal sectional view of a modified construction ofdispensing device having a single chamber for material; and

Figure 6 is a sectional view of a modified form of sealing means for theextruding end of the device.

In the specific embodiment of the invention illustrated in said drawing,and referring initial- 45 ly to Figures 1 to 4 more especially, thereference numeral Ill indicates the primary container which ispreferably of elongated, tubular construction with one end rounded andprovided with an extruding orifice l I. At the opposite end of the con-50 tainer is provided a plug or other closure l2 secured in appropriatemanner, as by cementing, to the container. This plug is shown as havingan outer peripheral rim i3 slightly larger than the inside diameter ofthe container so as to limit 55 insertion of the plug. At the inner endof the PATENT OFFICE d Friedman as- 1932, Serial No. 649,024

plug the central portion is cut away providing a recess or pocket Itthereat for purposes hereinafter explained. By virtue of this recess l4,the inner end of the plug constitutes a stop I5. I Within the containeris mounted a plungerhead iii of cork or other suitable material which,when the device is received by the user, is in engagement with the saidstop l5 formed at the inner end of the plug. By imparting a longitudinalsliding motion to this plunger headl6 within the container toward theend having the orifice ll, extrusion of the material in the container isobtained. In the particular showing of Figures 2, 3 and 4, an innercontainer i1 is shown of a diameter such as to substantially fit withinthe outer or primary container l and having a similarly rounded end withan orifice i8 like the primary container. This inner container is ofless length than the primary container so as to be slidable therein,and, as received by the user, is in position with its end against stopl5. The plunger head above described fits snugly within this innercontainer and has an outer end similar to the rounded end of thecontainer so as to ultimately nest therewith for obtaining an extrusionof as much of the contents as possible. In use, the forcing of theplunger outward extrudes material of the inner container into the outercontainer and extrudes the mixed materials from the outer container.

As a further and important feature of our invention, we provide, as partof the plunger for operating the plunger head, a plunger stem l9. Thisplunger stem has one end, for convenience designated the inner end,provided with a flaring or other shoulder 20 which will rest against themarginal portion of the rounded end of the primary container about theextruding orifice. Beyond this shoulder 20, the stem provides a reducedportion or neck 2 l which in Figures 1 to is shown as somewhat undercuttoward the shoulder, and in Figure 6 is shown at 2| as threaded, both ofthese constructions being for providing means for sealing the orificeand retaining the plunger in position within the co'ntainer. Where theundercut neck 2| is provided, the seal may be assured by application influid condition of a substance 32 which will harden in place, such forexample as a tion. In Figure 6, a cap ornut 33 is shown which is screwedupon the threaded end, of thefjstem outside of the container. In thisinstancethe cap or nut has to be removed before the device vis used, andin the other showing, the sealingmatecellulose composi rial is broken bytwisting or retracting the plunger stem.

The plunger stem extends axially through the container and through a.

and the plunger head of cork.

It will be noted, that in use 01' the device, the

outer end of the plug. likewise brought against after which the innerassembly is slid Joints as gagement with the inside of the single orprimary container ll.

g has represented only one inner conbe understood that any numbernesting arrange- Furthermore, other detail changes and light of theprior art.

Having thus described the invention, we cla 2. A dispensing devicecomprising a container for material to be retracted through the plungerhead without being permitted to leave the container.

5. A dispensin device comp ising in combinetion with a container, aplunger head, a stem for operating said plunger head, said stem having ashoulder for engaging said plunger head for operating the same in onedirection and being movable with respect to the plunger head in theopposite direction whereby the stem cannot retract the plunger head froman advanced position, and a stop for limiting retraction of said plungerhead in a position advanced from the stopping of the retraction of saidstem, thereby enabling the stem to be retracted through .the plungerhead without being permitted 'to leave the container.

6. A dispensing device comprising an elongated container having anorifice therein, a stem wit said container, said stem having a shoulderunderlying the margin of the container next said orifice and having athreaded terminal neck protruding through said orifice, and a threadedcap applied to said protruding neck and overlying said margin forsealing the orifice and retaining the stem in orifice-closing position.

'7. A dispensing device comprising a plurality of nested containersslidableone within another, each container carrying a material to beextruded, and means normally positioned in the extruding ends of saidcontainers and retractable from said ends forproviding open extrudingorifices in use. I

8. A dispensing device comprising a plurality of nested containersslidable one within another, a plunger within the inner one of saidcontainers, and means normally positioned in the extruding ends of saidcontainers and retractable from said ends for providing open extrudingorifices in use.

9. A dispensing device comprising a plurality of nested containersslidable one within another each having an end for extruding purposesinitially sealed for separating the contents of the several containers,and means normally extending through said extruding ends and retractabletherefrom for opening each of said containers whereby the contents maybe extruded.

10. A dispensing device comprising a plurality of nested containersslidable one within another and initially sealed for separating thecontents of the several containers, means for opening each of saidcontainers, and a plunger head within the inner of said containersoperable in extrudin direction only whereby the material in thatcontainer may be extruded to the next and said inner container slidwithin the next to extrude the material therefrom andretraction of thematerial into either container is prevented.

11. In combination, a container having an orifice at one end and havingits other end open, a closure for said open end, a plunger head in saidcontainer initially at the end of the container next said closure, astem passing through said closure and through said plunger head, saidstem having an inner enlarged end retractable through said plunger headand functioning both as a 010- sure for said orifice and a stop againstcomplete withdrawal of the stem as well as functioning as a means foradvancing the plunger head by a returning inward movement of the stemafter retracting the said enlarged end through said plunger head.

WILLIAM FRIEDMAN.

BENJAMIN LINDNER;

